Low-frequency vibration reduction of an underwater metamaterial plate excited by a turbulent boundary layer

Dong, Wenkai; Huang, Zhangkai; Wang, Ting; Chen, Meixia

doi:10.1016/j.jfluidstructs.2024.104103

Journal of Fluids and Structures

2024

DOI: 10.1016/j.jfluidstructs.2024.104103

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Low-frequency vibration reduction of an underwater metamaterial plate excited by a turbulent boundary layer

Wenkai Dong,

Zhangkai Huang,

Ting Wang

et al.

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2024

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Cited by 2 publications

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Vibro-acoustic modeling of the turbulent excited cavity-plate-exterior space coupled system

Song,

Jin,

et al. 2024

International Journal of Mechanical Sciences

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Vibro-acoustic modeling of the turbulent excited cavity-plate-exterior space coupled system

Song,

Jin,

et al. 2024

International Journal of Mechanical Sciences

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Analysis of Low-Frequency Sound Absorption Performance and Optimization of Structural Parameters for Acoustic Metamaterials for Spatial Double Helix Resonators

Luo,

Yu,

Kang

et al. 2024

Crystals

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Low-frequency noise absorbers often require large structural dimensions, constraining their development in practical applications. In order to improve space utilization, an acoustic metamaterial with a spatial double helix, called a spatial double helix resonator (SDHR), is proposed in this paper. An analytical model of the spatial double-helix resonator is established and verified by numerical simulations and impedance tube experiments. By comparing the acoustic absorption coefficients of the spatial double-helix resonator, it is shown that the results of the analytical model, the numerical model, and the experiments are in good agreement, proving the accuracy of the theoretical model. The effects of different structural parameters on the peak sound absorption coefficient and resonance frequency are quantitatively revealed. The impedance variation law of the model is obtained, and the resistance and reactance distributions at the resonance frequency are analyzed. In the optimization model, the Back Propagation (BP) network is used to construct the mapping between the structural parameters and the resonance frequency and sound absorption coefficient, and this is used as the constraints of the equation, which is combined with Wild Horse Optimization (WHO) to establish the BP-WHO optimization model to minimize the volume of the spatial double helix resonator. The results show that, for a given noise frequency, the optimized structural parameters enhance the space utilization without affecting the performance of the space double helix resonator.

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Low-frequency vibration reduction of an underwater metamaterial plate excited by a turbulent boundary layer

Cited by 2 publications

References 43 publications

Vibro-acoustic modeling of the turbulent excited cavity-plate-exterior space coupled system

Vibro-acoustic modeling of the turbulent excited cavity-plate-exterior space coupled system

Analysis of Low-Frequency Sound Absorption Performance and Optimization of Structural Parameters for Acoustic Metamaterials for Spatial Double Helix Resonators

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